Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 22: Flavour physics 1

T 22.2: Talk

Monday, March 4, 2024, 16:15–16:30, Geb. 30.41: HS 4

Search for the B⁰→ D⁰D⁰ decay with the LHCb experiment — Johannes Albrecht, •Jonah Blank, Quentin Führing, and Sophie Hollitt — TU Dortmund University, Dortmund, Germany

With precise measurements of B meson decays the LHCb experiment can test the integrity of the Standard Model of particle physics. Especially B → D D decays are interesting to examine CP violation and further constrain the unitarity triangle. While decays to charged D^± mesons have already been well measured, the B⁰→ D⁰D⁰ decay channel has not yet been observed by any experiment.

In this analysis, data collected by the LHCb experiment at √s = 7, 8 TeV and 13 TeV corresponding to an integrated luminosity of 9 fb⁻¹ is used to search for the B⁰→ D⁰D⁰ decay channel. The topologically similar B⁰→ D⁰π⁺π⁻ decay channel is utilized as a normalisation mode to cancel systematic uncertainties. An update on the current status of the analysis will be presented.

Keywords: B2OC; B2DD; BR Measurement; LHCb